Sürdürülebilir Kalkınma Amaçları

• 2

Yazarlar

• Adanur, Oguzhan(1)
• Bayrakdaroglu, Serdar(1)
• Ceylan, Halil Ibrahim(1)
• Ceylan, Tulay(1)
• Dhahbi, Wissem(1)
• Durhan, Tebessum Ayyildiz(1)
• Engin Celikel, Baha(1)
• Günay, Ahmet Rahmi(1)
• Jalalov, Ferhad(1)
• Kaba, Ilknur(1)
• Sever, Ozan(1)
• Stefanica, Valentina(1)
• Tan, Cetin(1)
• Yazici, Ahmet Gokhan(1)
• Yilmaz, Coskun(1)
• Yilmaz, Hasan Huseyin(1)
• Yonca Sezer, Sureyya(1)
• Özdemir, Kubra(1)
• Özer, Ugur(1)

• MakaleAçık Erişim2026Scopus SJRQ2/r/gumushane/10499
  Multi-joint isokinetic strength profiling as a predictor of vertical jump performance in elite freestyle wrestlers A cross-sectional principal component analysis

  Sever, Ozan; Ceylan, Halil Ibrahim; Dhahbi, Wissem; Yilmaz, Hasan Huseyin; Özdemir, Kubra; Yazici, Ahmet Gokhan; Jalalov, Ferhad; Günay, Ahmet Rahmi; Bayrakdaroglu, Serdar; Stefanica, Valentina

  Wrestling requires coordinated lower-limb strength for explosive techniques. While isokinetic testing isolates joint-specific strength and countermovement jumps assess functional power, comprehensive multi-joint assessments with advanced factor analysis remain unexplored in elite wrestlers. Twenty-one national-level male freestyle wrestlers (22.3 +/- 2.8 years; 76.2 +/- 14.7 kg) completed cross-sectional neuromuscular assessments. Isokinetic concentric strength testing at 60 degrees/s evaluated hip, knee, and ankle joint functions bilaterally using an Isomed 2000 dynamometer. Vertical jump power was assessed through countermovement jumps under bilateral and unilateral conditions using the Optojump system. All strength and power variables were normalized to fat-free mass determined via air displacement plethysmography. Statistical analyses included Pearson correlations with Benjamini-Hochberg correction, stepwise multiple regression, and principal component analysis. Bilateral jump performance correlated strongly with knee extension (R = 0.798, P <.001) and hip extension strength (R = 0.664, P =.001), with combined predictors explaining 68.8% of variance (F-2,F-18 = 19.8, P <.001). Principal component analysis identified a primary extensor factor (hip and knee extension, 52.6% variance) and an auxiliary factor (ankle plantar flexion and hip adduction, 19.0% variance). Unilateral jump models demonstrated lower explanatory power (dominant: 39.8%, non-dominant: 25.7%). Multi-joint isokinetic strength assessment, particularly hip and knee extension capacity, provides a robust prediction of vertical jump performance in elite wrestlers. The identified primary extensor strength factor represents a fundamental neuromuscular capacity underlying explosive lower-limb function, supporting targeted strength development strategies for wrestling-specific performance enhancement.

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  AtıfScopus12·WoS12·OpenAlex11

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• MakaleAçık Erişim2025Scopus SJRQ2/r/gumushane/10555
  Maximizing performance in child footballers: chronotype and time of day study

  Kaba, Ilknur; Engin Celikel, Baha; Adanur, Oguzhan; Yilmaz, Coskun; Yonca Sezer, Sureyya; Tan, Cetin; Durhan, Tebessum Ayyildiz; Özer, Ugur; Ceylan, Tulay

  Background A limited number of studies have investigated the effects of circadian rhythm-based running exercise interventions on physical fitness in child athletes. This study aimed to investigate the effects of an eight-week morning and evening running program on lower extremity strength, agility and respiratory function in 10-12-year-old male footballers.Methods Participants visited the laboratory three times, with one-day intervals before and after the training program. The assessments included maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and the FEV1/FVC ratio. Additionally, agility and functional performance tests (FPTs) were conducted for both the dominant and non-dominant legs.Results The findings indicated that morning running was more effective than evening running in enhancing respiratory function. Morning running also showed superior results in lower extremity strength tests, particularly in the single-leg (SL) and triple-leg (THD) crossover hop for distance tests (CHDs) and the 6-m timed-hop test (6 m THT). Furthermore, the agility performance of the morning running group was significantly better than that of the evening and control groups.Conclusion Consequently, morning running interventions had a positive impact on key physical fitness parameters, including respiratory muscle strength, respiratory function, agility, and lower extremity strength in child footballers.

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